Swivel connection.



Patented June 25, 1918 v RB@ mmm@ N S NLLJZ..l

H. E. MLLER;

'SWIVEL CONNECTION. APPLICATION FILED Nov. 8. 191? lkml.

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:RALPH E. MLLER, OF .PARSHALL NORTH DAKOTA.,

. SWIVEL CONNECTION.

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, Specification of Letters Patent. Paul-,entd Jun@ 25" 191% application filed November 8, 1917. Serial No. 200,973.

To all whom t may concern:

Be it Jknown that I, RALPH E. Mmnnn, a citizen of the United Stat/es, residing at Parshall, in the county ofMountrail, State of vNorth Dakota, have invented a new and useful Swivel Connection; and l do hereby declare the ollowingto be a iull, clear, and exact description of the invention, `such as will enable others skilled in the art to which it appertains to makeY and use the same.

This invention relates in general to well drilling appliances, and more particularly to a swivel connection for joining a water discharge pipe to the upper end oi a reciprocating string of tubular drill rods, thereby enabling the drill rods to vrotate independently of the water discharge pipe and avoiding any twisting of the rubber hose connection beween` the discharge pipe and the punip. Y

Further objects of the invention are to provide a device of this character which is comparatively simple and inexpensive in its construction, which can be used in connection with the conventional well drilling appliances, which provides an effective and water-tight oint, and which can be adjusted to take up wear.

With these and other objects in view, the

invention consists in certain novel combinations and arrangements of the parts as will more fully appear as thevdescription proceeds, the novel features thereof being pointed out ,in the appended claims.

For a full understanding of the invention, reference Vis to be had to the following description and accompanying drawings, in which Figure 14 is a side elevation yo1 a reciprocating string of tubular drill rods having a swivel connection constructed in accordance with the invention applied to the upper end thereof, portions being broken away.

Fig. 2 is an enlarged longitudinal sectional view through the swivel connection.

Fig. 3 is a transverse sectional view on the line 3-3 of Fig. 2.

Corresponding and like parts yare referred to in the following description and indicated in all the views of the drawings by the same reference characters.

Referring to the drawings, the reference character A designates a string of tubular drill rods which is 'provided at its lower end with a conventional drillingbit B adapted to be lowered through the casing C of a well,

the upper end of the string of drill rods being joined by the swivel connection tothe water discharge pipe l. This pipe lis laterally connected to a flexible hose member 2 leading to a conventional pump, and yis connected `at its upper end by suitable suspension means D to a cable 3 which passes upwardly around .the pulley on the derrick and 'is `operatively connected to the usual mechanism for alternately taking it in' and i letting it out to raise and lower the `string it. of drill rods during the drilling opera tion. The upper end of the water discharge pipe 1 is shown as provided withy a `'IV-connection 3, the lateral arin thereof being provided With a short curved pipe 4: to'which the rubber hose 2 is connected, while the upper end thereof has a plug 5 fitted therein., said plug being 'formed with `a `stein 6 upon which the yoke 7 is swiveled, "said" yoke being held in position by theI nuts 8. This stein (3 `and yoke 7 constitute suspension means D for connecting the upper end of the water discharge pipe to the operating cable 3 lof the drilling mechanism.

A. barrel 9 surrounds the water discharge pipe 1, the space between the barrel and the pipe being filled with packing 10. A packing nut 11 is threaded upon the upper end of the barrel 9 and arranged to be screwed down whenever itl becolnes necessary "to tighten the packing, said packing nut `being forined with a bushing 11?t through which the water discharge pipe extends.

rlhe lower end of the barrel 9 has a sleeve, 12 exteriorly threaded thereon, said` sleeve being provided at an intermediate pointfin its length with an inwardly projecting annular flange 13 which surrounds the water discharge pipe 1 and forms an abutment which is arranged in alinement with the water pipe 1 and adapted to be secured by a suitable union 18 to the upper end of the string A oi `tubular drill rods. The inner face of the head `16 may be formed `with a conical seat 16a, while the lower end of the @the lowerend of the water pipe and engagl.ingthe ange of the sleeve, and a head fitted Iinthelower end of the sleeve and provided water pipe 1 and lock nut 15 may be tapered `at 15*l for engagement with the seat 16,

thereby providing a bearing which will resist thel up and down thrusts of the tool without interfering in any manner with the rotationvof the drill rods and barrel 9 about the water pipe 1 vas a center. The head 16 can be screwed into the lower end of the sleeve 12 and brought into proper engagement with the lower end of the water pipe 1,*.after which it can be locked against working loose by a suitable jam -nut 19. This .construction also admits of adjustment being readily. made to compensate for wear. In the operation of the device the string of drilling rods and swivel connection are raisedfand lowered by the conventional drill- .ingfmechanism, water being forced into the Well or `pumped from. the well through the tubular drill rods, water pipe 1, and rubber ,pump connection 2. Thedrill rods are, however, free to rotateI independently of the :water pipe, thereby avoiding the possibility of twisting the rubber hose connection leadend thereof, a packing barrel surrounding vthe water pipe, packing interposed between the barrel and pipe, a sleeve fitted upon the lower end-of the barrel and provided at an intermediate point in its length with an interior flange surrounding the water pipe ,and providing an labutment for the packing of the barrel, a bearing collar litted -upon with a pipe section arranged in alinement with the water pipe, said head engaging the lower end of the water pipe and maintaining the pipe section in communication with the zwater pipe. v

` 2. In a swivel connection of the character sul described, the combination of a water pipe having alateral pump connection and provided atx its upper end with suspension rmeans, a packing barrel surrounding the 4water pipe, packing interposed between the barrel and water pipe, a sleeve fitted upon the lower end'of the barrel and provided iwith an interior annular flange surrounding the l.Water pipe and providing an abutment :for the lowerend of the packing, a bearing oollarthreaded uponthe lower end of the fwater -pipe. and engaging the flange of the sleeve,- a lock nut for holding the bearing collar in anadjusted'position, a head threaded inthe lowerend of the sleeve and provided with a pipe section arranged in alinement with the water pipe, said head being adapted to be brought into loose engagen'ient with the water pipe to maintain the water pipe and pipe section in coinn'iunication, and a lock nut for holding the head in an adjusted position.

3. In a swivel connection of the character u, described, the combination of a water pipe having a lateral pump connection and provided at its upper end with suspension means, a packing barrel surrounding the pipe, packing fitted within the barrel and the pipe, asleeve applied `to the lower end of the barrel and provided at an intermediate point in its length with lan interior annular flange which surrounds the water pipe and provides an abutment for the lower end of the packing,V a bearing collar applied to the lower end of the water pipe for engagement with the flange, a head fitted within the lower end of the sleeve and provided with a pipe section arranged in alinement with the water pipe, said head serving to hold the water pipe and pipe section in communication, and one of the members being provided with a seat loosely receiving the other member.

1. In a swivel connection of the character described, the combination of' a water pipe having a lateral pump connection and provided at its upper end with .suspension means, a packing barrel surrounding the water pipe, packing fitted 4between the barrel and pipe, a sleeve applied to the lower end of the barrel and provided at an intermediate point with an interior annular ange surrounding tlie' water pipe and providing an abutment for the lower end of the packing. a bearing collar applied to the lower end of the water pipe for engagement with the flange of the sleeve, a lock nut for the bearing collar, said lock nut and water pipe having a tapered end, and a head fitted in the lower end of the sleeve and provided with a pipe section arranged in alinement with the water pipe, said-head being provided with a conical seat adapted to receive the tapered end of the water pipe and lock nut thereon.

5. In a swivel connection of the character described, the combination of a water pipe having a lateral pump connection and provided at its upper end with suspension means, a packing barrel surrounding the water pipe, packing fitted between the barrel and pipe, a sleeve applied to the lower end of the barrel and provided at an intermediate point with an interior annular fiange surrounding the water pipe and providing an abutment for the lower end of the packing, a bearing collar fitted upon the lower end of the watei pipe and engaging the flange of the sleeve, a lock nut for the bearing collar, the lower end of the water pipe and lock nut being tapered, a head threaded adjustably within the lower end of the sleeve and pro- 130 Lemme el vided with a pipe section arranged in alinename to this specification in the presence of ment with the Water pipe, said heed being two subscribing Witnesses. provided With e conical seat adapted to loosely receive the conical end ofthe water RALPH E' MILLER 5 pipe and lock nut thereon, and e lock nut for Witnesses:

holding the head in an adjusted position. B. E. CRIPIPEN, In testimony whereof l have signed my R. E. Roemi.

Copies of thm patent may be obtained for me eeuw enen, by Mdrein the ommwmlomei of mento,

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